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以株型好、柱头无色的培矮64S选系17S为母本,以保持系201B为父本杂交,经5 a定向选育,育成水稻温敏核不育系33S。该不育系不育起点温度低(<23℃),具有理想株叶形态,穗大粒多,抗倒伏,开花习性好,花时早(午前花率95.1%),异交结实率高等特点,2012年5月通过湖南省农作物品种审定委员会审定。
With the good plant type, stigma colorless Pei’ai 64S line 17S as the female parent, to maintain the line 201B as the male parent, after 5 a directional breeding, breeding of rice thermo-sensitive genic male sterile line 33S. The starting point of male sterility was low (<23 ℃) and had the characteristics of ideal plant leaf shape, large spike size, good lodging resistance, good flowering habit, early flowering (95.1% of flowering rate) and high outcrossing rate. May 2012 through the Hunan Provincial Crop Variety Approval Committee validation.